Planer.



C. M. CONRADSON.

PLANER.

APPLICATION FILED AUG-Z6, 1913.

Patented June 27, 1916.

4 SHEETS-SHEET 1- C. M. CONRADSON.

PLANERJ APPLICATION FILED AUG-26,, I913.

Patented June 27, 1916.

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g M 6 7 H p 5 We 6 0 WM 7 0 T c r? a I N NM." MM. JIWI E y .2 W03 UNITED srais PATENT carton CONRAD M. CONRADSON, F MADISON, WISCONSIN.

Application filed August 26, 1913. Serial 1\10. 786,869.

To all whom it may concern:

Be it known that I, CONRAD M. CoNRAn- SON, a citizen of the United States, and re s1- dent of Madison, Dane county, Wisconsin, have invented certain new and useful Improvements in'Planersof which the following is a specification.

My invention relates to planers operated by hydraulic power.

The object of the invention is to eliminate the complicated arrangement of gearmgs and driving connections usually employed in machines of this type.

A further object is to dispense with the usual reversing motor or pulleys running in opposite directions and avoid waste of power and the necessity of overcoming the momencally noiseless in operation.

Other objects of the invention will appear from the following detailed description.

The invention consists generally in various constructions and combinations all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure l is a side elevation of a planer embodying my invention, Fig. 2 is a plan, sectional view of the same, Fig. 3 is an enlarged detail view, partially in section, of the controlling mechanism, Fig. 4 is a sectional view on the line w-m of Fig. 3, Fig. 5 is a sectional view on the line yg of Fig. 3, Fig. Sis a sectional view on the line 'w w of Fig. 3, Fig. 7 is a detail view of the mechanism for shifting the tool holder, Fig. 8 is a detail, sectional view showing the travel of the operating fluid, Fig. 9 is a detail view, showing the pipes for conducting the operating fluid to and from the fluid pressure cylinder, Fig. 10 is a sectional view on the line z-2 of Fig. 11, illustrating the construction of the motor pump for operating the bed or platen of the planer, Fig. 11 is a sectional View taken Patented June 27, 19116.

on a line at right angles substantially to the section line of Fig. 10.

In the drawing, 2 represents the frame of a planer, 3 the upright brackets or standardsthereon supporting a tool-holder 4: of any ordinary or preferred construction.

5 is the planer bed or platen on which the work is placed in the usualjtway (see Figs. .1 and 2). 6 is an electric motor mounted preferably on the frame 2 and having a driving shaft 7 extending transversely of the machine frame. A plate 8 is seated against the frame 2 on the opposite side thereof from the motor 6 and has a cone bearing 9 for the tapered surface 10 of a revolving sleeve 11. A flanged ring 12 is carried by the sleeve 11 and encircles the cone bearing 9 and is provided with an internal gear 13 meshing with a pinion 14 that is mounted on the outer end of the driving shaft 7. A casing 15v incloses the sleeve 11 and the ring 12 and is secured to the frame 2 by suitable means such as bolts passing through the plate 8. outer end of the sleeve 11 and a ring 17 is interposed between the end of said sleeve and adjusting screws 18, by means of which the wear of the parts may be taken up. The sleeve 11 has a series of cylinders 19 radiating therefrom at intervals, there bewith by flanged rings 26. When, therefore, -.the cylinders are revolved, the pistons will be reciprocated in their cylinders, assuming that the shaft is in an eccentric position with respect to the axis of the sleeve on which the cylinders are mounted. If the shaft is concentric with the sleeve, no move- A hub 16 has a bearing for the ment of the pistons will take place in the I described in my pending application on Hyaulic variable speed transmission, filed August 7, 1913, Serial-No. 783,528. I The cone 9 has ports 27 and 28 therein, communicating through ducts or passages 29 and 30 with the cylinders 19, and pipes 31' and 32 communicating with the ports 27 and 28 and with the ends of a pipe 33 that is mounted in the frame2 of the planer and extends lengthwise thereof beneath the planer bed (see Fig. 2 A partition 34 is arranged transversely in the pipe 33, preferably bymaking the pipe in two sections and has heads 39 mounted to slide on said pipe, and said cylinder is secured to the under side of the bed 5(see Figs. 2 and 8).. The pipe 33 and the manner of mounting it provides for ducts in the circulating systern, allows the pipe tobe put under tension, and prevents it from buckling or whipping with the movement of the bed.

On each side of the sleeve'35, chambers 40 and 41 are provided between the -cyl inder and the pipe 33, and ports 42 are provided in the walls of the chambers 36, and 37 leading to the chambers 40 and 41,

so that when the inelastic fluid is. forced into one end of the pipe 33, it will flow outwardly through one group of the ports 42 into one of thechambers 40 and 41 and against the end walls of these chambers, formed by the sleeve 35 and the heads 39 and will force the cylinder back and forth on the pipe 33 and move the planer bed and the Work thereon toward or from the tool-' holder. The cylinder is preferably provided with suitable vent cocks 43. A reservoir 44 is preferably provided beneath the pipes 31' and 32, having check valve connections 45 with said pipes. This reservoir is designed to supply oil or other inelastic fluid, which may be used, to the system, to offset the loss resulting from leakage, the oil being drawn into the system by the suction stroke of the pump plungers. Having now described the apparatus for transmitting the power of the motor to the planer bed on its forward and reverse movement, I will now describe the preferred mechanism employed for controlling this power.

46 is a yoke, mounted to straddle the easing 15, and, having its arms mounted on the ends of the shaft 22. A shaft 47 is horizontally mounted in an arm 48 on one of the brackets 3 and is provided with an operat-ing lever 49 by means of which the shaft- 47 maybe rocked by hand when desired.

A collar 50 is secured on the inner end of the shaft 47'and carries a stud 51. A coupling 52 is loosely mounted on this stud and a turn buckle 53 is tapped into the end of the stud and into the yoke 46. By the adjustment of this turn buckle, the adjustment of the stroke of the shaft 22 may be varied with respect .tothe axis of the the cylinders and increase the speed of the work bed in one direction.- I amthus able to move the work bed faster on its return stroke than on its working stroke, thereby increasing the eificiency of the machine.

This variation in speed of the work bed on its working and return stroke will continue automatically until such time as the turn buckle is readjusted.

An arm 54 is loosely mounted on the shaft 47 and is provided with a plunger 55 secured in said arm and a pin 56 is slidable in said plug and adapted to enter a socket I 57 in the stud 51, a spring 58 normally holding said pin in said socket. A finger grip 59 is mounted on the end of the pin 56, to allow the pin to be pulled outwardly and disengaged from the socket. A lug 60 is car.- ried by the finger grip 59 normally fittlng Within a notch 61 in a flange 62. When this lug is withdrawn from the notch and the pin rotated, the pin will be held in its retracted position. When the pin 56 is withdrawn, the shaft 47 may then be rocked by the movement of the lever 49 and the automatic mechanism for shifting the sh'aft'22 will be'temporarily out out.

A rod 63 is journaled at one end on the plug 55 and has a hearing at its opposite end on a .crank pin 64 mounted on a block 65 that is slidable in guides in the face of a gear 66 that is loosely mounted on a stud 67. An adjusting screw 68 is mounted in .a lug 69 on the gear 66 and is tapped into the block 65, and by means of this screw the block may be moved back and forth across the face of the gear 66- to change the position of the crank pin 64' with respect to the axis of said gear and thereby regulate the stroke of the rod 63. An eccentric 70 is mounted 'on the gear 66 and a fork 71 is pivoted at 72 and has arms to straddle the eccentric 70 and bear thereon and a toothed surface 73 to engage a vertically moving rack-bar.

74 for shifting the tool-holder.

A shaft 75 is mounted transversely in the machine frame and is driven through a belt 76 from the shaft 7. A sleeve 77 is loosely mounted on the shaft 75 and. is provided 1B5 with a pini0n78 to mesh with the gear 66. The outer end of the sleeve 77 has a clutch member 79 arranged to engage another clutch member 80, secured on the shaft 75. When the clutch members are in engage ment with one another, the pinion 78 will be revolved and normally the members are held in engagement with one another by the tension of a compression spring 81. The shaft 75, with its connections, forms a supplemental or auxiliary power for operating the reversing mechanism independently of the work bed, and the stop motion device, including the clutch members, forms a convenient and well known mechanism for ren dering the auxiliary power active or inactive, according to'the position of the trip gleizhanism and the movement of the work The sleeve 77 has an annular groove 82 therein, provided on one side with a cam tooth 83. A pin 84 is mounted to project into the vgroove 82 and is normally held ztherein by a compression spring 85. The

pin 84 is pivotally connected with a link 86 that is mounted on one arm of a bell crank 87 the other arm of said bell crank being connected by a link 88 with a rocker arm 89 having a lever 90 mounted thereon. This rocker arm is pivoted at a point intermediate to its ends on the frame 2 and projects into the path of the stops 91 and 92 Q11 the planer bed, and when the bed is near the end of its stroke, one of the stops will engage the arm 89 and rock it and the bell crank 87 to withdraw the pin84c from the groove 82. This withdrawal will allow the sleeve 77 to slide outwardly and its clutch member to engage the clutch member 80, thereby temporarily locking the pinion 78 on the shaft 75 and driving the gear 66. This movement of the gear 66 will continue until it has made a half revolution or shifted the crank pin 64 from one side of the center of the gear to the opposite side and thereby moved the shaft 22 to change the position of the plungers in the cylinders 19 and rebed.

In the operation of the machine, if it is desired to have the controlling mechanism shifted by the movement of the planer bed, the stops 91 and 92 are adjusted to engage the arm 89 when near the end of the stroke of the bed and when this arm is rocked, the pin 8 1 will be drawn from the groove 82 and,

its engagement with the tooth 83, and the a sleeve '77 will move into engagement with the clutch member 80, thereby locking the p nion 78 temporarily and transmitting the power to the gear 66. The pinion 78 will make a complete revolution and the pin 84, having been returned to its normal position in the groove 82, will contact with the tooth 83 and disengage the two members of the clutch. The teeth of the gear 66 and the pinion 78 are in the ratio of two to one, and a complete revolution of the pinion 78 will revolve the gear 66 one-half a revolution and the shaft 22, through its connection with the crankpin '64; will be shifted to change the eccentricity of the said shaft with respect to the revolving cylinders. The nearer thisorank pin is to the center, the shorter will be the stroke of the pistons and the slower the movement of the inelastic fluid. In Fig. 10 the pump is illustrated with the revolving cylinders driven through the drive pinion 14L and moving from left to right, as indicated by the arrow. In this view the cylinder at the bottom of the figure and the one at the left are taking in oil, while the others are in the different steps of discharging the oil from the cylinders. This results in forcing the oil in one direction through the pipe 31 and returning it through the pipe 32. Upon shifting the axis 22 to the other side of the center, the position of the pistons will be reversed and those which in the other position allowed their cylinders to take in oil will now be discharging it and a reversal in the direction of movement of the fluid will result. This adjustment of the pistons and the connection of the cylinders with the circulating pipes is plainly shown in Figs. 10 and 11. In the former figure the position and extent of the ports 29 and 30 are plainly shown in dotted lines, each port being sector-shaped and communicating respectivelv with the passages in the walls of the revolving cylinders and in this same figure the pipes 31 and 82 are indicated by dotted circles. The cylinder in the center at the bottom of Fig. 10 is squarely. opposite one of the ports and ,in direct communication therewith, as indicated by full lines in Fig. 11, while the cylinders at the top of Fig. 10 are represented respectively as moving into communication with the port 29 and passing out of communication therewith. The passages from these two cylinders do not appear in Fig. 11, as the section line is taken through the casting between these upper cylinders, as shown in the full, lines of Fig. 11 at the top of the port 29. Whenever desired, the rod 63 may be disconnected from the shaft 47 and by means of the lever 49, the operator can shift the shaft 22 and regulate the speed and direction of movement of the work bed by hand.

The supplemental or auxiliary power device for operating the reversing mechanism renders the machine positive and reliable in bed for tripping or releasing the power device.- This insures smoothness of operation and obviates entirely any jar or jerk, which frequently would result where the shifting mechanism is operated through directengagement with the work bed.

It is evident from an examination of Fig. 3, that the eccentricity ofthe crank pin 64 with respect to the gear 66 will correspond with the eccentricity of'the shaft 22 with respect to the axis of the revolving cylinders. Consequently, when the block is shifted by the adjustment of the screw 68, a corresponding movement will be imparted to the shaft 22, and the stroke of the pistons will be varied to change the speed of the work bed and by means of the turn buckle device, the speed of the work bed may be decreased on the working stroke and increased on the U return or backstroke. It will also be noted that the construction is such that the block 65, the parts-63, 52 and 46, are all in a straight lock for each reversal, no matter in what position the block 65 may be adjusted. Thereby a perfectly uniform travel of the bed is obtained and, furthermore, the movement of the crank pin being effected by crank motion and gearing, the movement of the pump crank pin is effected smoothly and uniformly and forward and reverse movement is obtained without shock or jar. It is also to be noted that with this straight line lock the shaft 22 of the pump will be held positively in its adjusted position, thereby insuring accuracy of operation of the machine.

In various Ways the details of construction shown herein may be modified and still be within the scope of my invention as set forth in the appended claims.

I claim as my invention: I

1. The combination, with a frame, of a re ciprocating work bed, an inelastic fluidpump operating continuously in one direction, an inelastic fluid circulating system connecting said pump with said work bed, s'aid pump including means having a stop motion connection for reversing the direction of flow of the fluid to reciprocate said work bed during the continuous operation of said pump in one direction, and means in connection with said reversing means for operating said work bed at a-higher speed on its return or back stroke than on its working stroke.

2. The combination with a frame, of a reciprocating work bed, an inelastic fluid pump and means for operating it continuously in one direction, said pump having 3. The combination, with a frame, of-a re ciprocating work bed, an inelastic fluid pump mounted to revolve continuously in one direction and having fluid connections with said bed to reciprocate the'same in said frame, said pump including means having a stop motion device for reversing the direction of flowv of the'fluid therein with the continuous operation of said pump in one direction for feeding said bed and the work and reversing the same.

4. The combination, with aeplaner frame, of a reciprocating work bed thereon, an inelastic fluid pump having fluid connections shaft on the opposite sides of the axis of said cylinders, a gearhaving a crank pin pivotally connected with said rock shaft and adjustable toward or'from theaxis of said gear, the adjustment of saidcrank pin despeed pf said work bed, and means for operating said gear and rock shaft. v

5. In combination, with a reciprocating .member, a fluid circulating system and a pump connected therewith, a reversing mechanism connected with said pump for changing the direction of'flow of the fluid in said system, and mechanism released by the movement of said member for positively operating said reversing mechanism.

6. The combination, with a reciprocating member, of an inelastic fiuid pump having fluid connections with said member, mechan1sm for reversing the flow of fluid through 'with'said work bed, said pump including re-- .terminmg the stroke of said pistons and the Y said pump and fluid connections, positively operated means released by the movement of said member for automatically shifting said reversing mechanism, and a manually operated device for shifting said reversing mechanism.

7. The combination, chine frame, and a reciprocating work bed thereon, of a cylinder and piston, one being connected to said frame and the other to said work bed, a pump casing having ports for communication with said cylinder and piston and forming therewith a circulating system adapted to contain an inelastic fluid, said pump including means for forcing the liquid through said ports into said cylinder to move said work bed, reversing. means actuated by the movement of saidbed for with a planing maeluding a stop motion device and a lever.

reversing the direction of flow of the liquid in said system, and mechanism operable independently of vsaid actuated means I for changing the stroke of said means to control the speed of said work bed.

8. The combinationpwith a planer frame and a reciprocating work bed thereon, of-a cylinder and piston, one being connected to said frame and the other to said work bed, a pump casing mounted on said frame and having ports therein and pipe connections with said cylinder and piston, a flanged ring having an internal gear mounted to revolve in said pump casing, a driving shaft having a pinion meshing with said gear, a sleeve secured to said gear ring to revolve therewith and having a series of cylinders radiating therefrom, a shaft slidable transversely in bearings within said casing, pistons for said cylinders having rods contact ing with said sliding shaft, and means for shifting said sliding shaft from one side of the axis of said revolving cylinders to the o posite side thereof and thereby reversing t e direction of flow of the liquid and the movement of said work bed.

9. The combination, 'with a reciprocating work bed, of an inelasticfluid pump having.

fluid circulating connections with said work bed for operating the same, means for operating said pump at a uniform speed in one direction, and means operating by and through said pum for varying the speed of said work bed and reversing its movement, said speed varying and reversing means inmecham'sm capable of operation independently of said stop motion device.

10. The combination, with a reciprocating work bed, of an inelastic fluid pum having fluid connections with said work be mechanism for reversing the direction of flow of the fluid through said pump and fluid connections, means controlled by the movement of the work bed for automatically shifting said reversing. mechanism, a manu ally operated device for shifting said reversing mechanism, and means for rendering said automatic means temporarily inoperative when said manually operated device' becomes operative.

11. The combination, with a reciprocating work bed, of an inelastic fluid pump having fluid connections with said work bed, said pump including revolving cylinders and pistons therefor having connecting rods, means having a bearing for said connecting rods and capable of adjustment for varying the stroke of said pistons, mechanism actuated by said work'bed for shifting the bearing for said connecting rods to reverse the direction of movement of said work bed, a manually operated device for adjusting said connecting rod bearing, and

' a device for rendering sald automatic mechanism temporarily inoperative-when said manually operated device; ,;becomes operative.

12. The combination, with a frame, of a reciprocating work bed, an inelastic fluid pump having fluid connections with said work bed, said pump including revolving cylinders and pistons therefor, said pistons having a shaft that is adjustable transversely with respect to the axis of said cylinders, a rock shaft, a-collar secured thereon, a coupling loosely connected with said collar, a yoke connected to said piston shaft and having means for connection with said coupling, and a lever for said rock shaft for manually adjusting said piston shaft and regulating the stroke of said pistons to vary the speed of movement of said work bed.

13. The combination, with a frame, of a reciprocating work bed thereon, an inelastic fluid pump having fluidconnections with said work bed, a rocking member, a pump reversing means connected with said rocking member, a loosely mounted member having a latch connection with said rocking member for simultaneous movement and allowing said rocking member to be operated independently when said latch is withdrawn, and mechanism actuated by the movement of said work bed past a predetermined point in either direction for oscillating said loosely mounted member independently of said rocking member when said latch device is unlocked and simultaneously with said rocking member when said latch is in its locking position.

work bed mounted to reciprocatethereon and provided with stops, a lever having an operating handle in the path of said stops, a rock shafthaving an arm pivotally connected with said lever, an inelastic fluid pump, an inelastic fluid circulating system connecting said pump with said work-bed, said pump including cylinders and pistons therefor having connecting rods and a'bearing'for said rods, and mechanism connecting said rock shaft with said bearing for shifting it back and forth across the center of said pump at the ends of the stroke of said work bed.

15. The combination, with a reciprocat- 4. The combination, with a frame and a ing work bed, of an inelastic fluid pump, 7 a

inelastic fluid circulating system connecting said pump with said work bed, a reversing said work bed nism connected with said pump for reversing the fiow of fluid therethrough, a trip device actuated by the movement of said work bed in both directions, and a stop motion means interposed between said reversing mechanism and said trip device for 1ntermittently operating said reversing mechanism.

' with said work bed,

- .18. The combination, with 'a reciprocating work bed, of an inelastic fluid pump, an inelastic fluid circulating" system connecting said pump with said work bed,-means for reversing the direction of flow of the fluid driven member having a clutch connection with said reversin said pump and system, a

mg means, and means-released by the movement of said work bed in both directions for operating said clutch to drive said driven member. w

19. The combination, with a reciprocating work bed, of an inelastic fluid pump having a fluid circulating system connected said pump including the direction of flow means for reversing system to reciprocate of the fluid in sai said work bed, a driven shaft having means for connection with said reversing means, and a ,stop motion device rendered operative by the movement of said work bed for temporarily connecting said shaft with said reversing means.

20. The combination, witha frame, of a reciprocating work bed, an inelastic fluid pump, an inelastic fluid circulating system connecting said mechanism for reversing the direction of flow of-the' fluid to reciprocate said work bed, va power driven device for operating said mechanism, and a trip mechanism actuated by the movement of said work bed for rendering said power device active or inactive.

21. The combination, with a reciprocating work bed, of an inelastic fluid pump having an inelastic fluid circulating system connecting it with said work bed, a pump reversing mechanism, and a power operated device normally inactive but rendered active by a predetermined movement of said work bed for shifting said reversing mechanism.

22. The combination, with a reciprocating member, of an inelastic fluid an'inelastic fluid circulating system connecting it with said member, a pump reat right angles sub-.

pump with said-work bed,

pump having versing mechanism, means nomially inactive V for automatically shifting said reversing mechanism, and means actuated b the movement of said member for ren ering said normally inactive means temporarily active.

23. The combination, member, of an inelastic fluid-pump having an inelastic fluid circulating system connecting it with said member, a pump reversing means, a shifting device therefor, said reversing mechanism forming a positive lock between said pump and said shifting device, whereby said pump will be rigidly held in its shifted position.

24. The combination, with a reciprocating work bed, of an inelastic fluid pump having an inelastic fluid circulating system connecting with said work bed, a sliding crank pin for said pump, a power operated device connected with said crank pin for shifting the same, the connections between said crank pin and said power operated device forming a straight line lock for positively holding said crank pin in its adjusted position, said power-operated device being normally inactive but becoming active at a predetermined point in the movement of said work bed for shifting said crank pin.

25. The combination, with a reciprocating work bed, of an inelastic fluid pump having fluid circulating connections with said work bed, a reversing mechanism for said pump for changing'the direction of flow of the fluid there'through, said reversing mechanism including a gear having a crank pin that is adjustable toward or from the axis of said gear for varying the stroke of said reversing mechanism and the speed of said work bed, means for operating said gear and crank pin, and an intermittently operateddevice for rendering said gear oper ating means active or inactive, for the purpose specified.

26. The combination, with a reciprocating member, of a fluid pump having a fluid circulating system connecting it with said memer, a 7 pump reversing means including means for locking said pump rigidly in its shifted position, and a shifting device for said pump.

27. The combination, with a reciprocating member, of a fluid pump having a fluid cirmember, said pump having a crank pin and a shifting mechanism therefor; for varying the stroke of said pump and the direction of'flow of the fluid therethrough, a posi tiveiy operated device for actuating said shifting-mechanism, and an automatic trip for said operating device. m

28. The combination, with a reciprocating inember, of an inelastic fluid pump having an inelasticflui-d circulating system connecting it with said member, a pump reversing mechanism, and, a power operated device culating system connecting it with said an inelastic fluid circulating system for connection With said member, a pump reversing mechanism, and a power operated device for controlling the speed of said reciprocating member.

in Witness whereof, I have hereunto set my hand this 22nd day of August 1913.

. CONRAD M. CONRADSON.

Witnesses:

M. A. HANSON, SIG ERICKSON. 

